<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        let arr = [1,2,4,5,7,10];
        // 说白 了就是循环
        let arr1 = arr.forEach(item=>alert(item))
    </script>
</head>
<body>

</body>
</html>